chore(speakeasy): Configure speakeasy tests

Author: rwjblue-glean

.github/workflows/sdk_test.yaml

@@ -0,0 +1,26 @@
+name: Test
+permissions:
+  checks: write
+  contents: write
+  pull-requests: write
+  statuses: write
+  id-token: write
+"on":
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '**'
+  workflow_dispatch:
+    inputs:
+      target:
+        description: Provided SDK target to run tests for, (all) is valid
+        type: string
+jobs:
+  test:
+    uses: speakeasy-api/sdk-generation-action/.github/workflows/sdk-test.yaml@v15
+    with:
+      target: ${{ github.event.inputs.target || 'glean' }}
+    secrets:
+      github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      speakeasy_api_key: ${{ secrets.SPEAKEASY_API_KEY }}